Anculotus dentatus Couthouy, 1839 accepted as Leptoxis carinata (Bruguière, 1789) (original description)
Bulla lineolata Couthouy, 1839 accepted as Philine lima (T. Brown, 1827) accepted as Retusophiline lima (T. Brown, 1827) (original description)
Bulla triticea Couthouy, 1838 accepted as Cylichna alba (T. Brown, 1827) (original description)
Cancellaria buccinoides Couthouy, 1838 accepted as Admete viridula (O. Fabricius, 1780) (original description)
Cardium pubescens Couthouy, 1838 accepted as Cardium ciliatum O. Fabricius, 1780 accepted as Ciliatocardium ciliatum (O. Fabricius, 1780) (original description)
Chiton emersonii Couthouy, 1838 accepted as Amicula vestita (Broderip & G. B. Sowerby I, 1829) (original description)
Chiton fulminatus Couthouy, 1838 accepted as Tonicella marmorea (O. Fabricius, 1780) (original description)
Chiton sagrinatus Couthouy, 1838 accepted as Stenosemus albus (Linnaeus, 1767) (original description)
Eolis bostoniensis Couthouy, 1838 accepted as Facelina bostoniensis (Couthouy, 1838) (original description)
Eolis gymnota Couthouy, 1838 accepted as Cuthona gymnota (Couthouy, 1838) accepted as Catriona gymnota (Couthouy, 1838) (original description)
Eolis salmonacea Couthouy, 1838 accepted as Ziminella salmonacea (Couthouy, 1838) (original description)
Fusus harpularius Couthouy, 1838 accepted as Propebela harpularia (Couthouy, 1838) (original description)
Fusus pleurotomarius Couthouy, 1838 accepted as Oenopota pyramidalis (Strøm, 1788) (original description)
Jaminia exigua Couthouy, 1838 accepted as Boonea bisuturalis (Say, 1822) (original description)
Natica consolidata Couthouy, 1838 accepted as Cryptonatica affinis (Gmelin, 1791) (original description)
Nucula myalis Couthouy, 1838 accepted as Yoldia myalis (Couthouy, 1838) (original description)
Nucula tenuisulcata Couthouy, 1838 accepted as Nuculana tenuisulcata (Couthouy, 1838) (original description)
Oxinoe glabra Couthouy, 1838 accepted as Marsenina glabra (Couthouy, 1838) (original description)
Patella candida Couthouy, 1838 accepted as Lepeta caeca (O. F. Müller, 1776) (original description)
Pleurotoma bicarinata Couthouy, 1838 accepted as Curtitoma violacea (Mighels & C. B. Adams, 1842) (original description)
Pyramis striatulus Couthouy, 1838 accepted as Couthouyella striatula (Couthouy, 1838) (original description)
Scalaria novangliae Couthouy, 1838 accepted as Epitonium novangliae (Couthouy, 1838) (original description)
Scalaria subulata Couthouy, 1838 accepted as Boreoscala greenlandica (Perry, 1811) (original description)
Tellina sordida Couthouy, 1838 accepted as Macoma calcarea (Gmelin, 1791) (original description)
Trichotropis costellatus Couthouy, 1838 accepted as Ariadnaria borealis (Broderip & G. B. Sowerby I, 1829) (original description)
Tritonia reynoldsii Couthouy, 1838 accepted as Dendronotus frondosus (Ascanius, 1774) (original description)
Turbo cinereus Born, 1778 accepted as Lunella cinerea (Born, 1778) (additional source)
Turbo cinereus Couthouy, 1838 accepted as Margarites costalis (A. Gould, 1841) (original description)
Turbo incarnatus Couthouy, 1838 accepted as Margarites groenlandicus (Gmelin, 1791) (original description)
Turbo obscurus Couthouy, 1838 accepted as Solariella obscura (Couthouy, 1838) (original description)
Turritella erosa Couthouy, 1838 accepted as Tachyrhynchus erosus (Couthouy, 1838) (original description)